/*
    *  Licensed to the Apache Software Foundation (ASF) under one
    *  or more contributor license agreements.  See the NOTICE file
    *  distributed with this work for additional information
    *  regarding copyright ownership.  The ASF licenses this file
    *  to you under the Apache License, Version 2.0 (the
    *  "License"); you may not use this file except in compliance
    *  with the License.  You may obtain a copy of the License at
    *
   *    https://www.apache.org/licenses/LICENSE-2.0
   *
   *  Unless required by applicable law or agreed to in writing,
   *  software distributed under the License is distributed on an
   *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   *  KIND, either express or implied.  See the License for the
   *  specific language governing permissions and limitations
   *  under the License.
   *
   */
  package org.apache.directory.api.ldap.codec.actions.request.modify;
  
  
  import org.apache.directory.api.asn1.DecoderException;
  import org.apache.directory.api.asn1.ber.grammar.GrammarAction;
  import org.apache.directory.api.asn1.ber.tlv.IntegerDecoder;
  import org.apache.directory.api.asn1.ber.tlv.IntegerDecoderException;
  import org.apache.directory.api.asn1.ber.tlv.TLV;
  import org.apache.directory.api.i18n.I18n;
  import org.apache.directory.api.ldap.codec.api.LdapCodecConstants;
  import org.apache.directory.api.ldap.codec.api.LdapMessageContainer;
  import org.apache.directory.api.ldap.model.entry.DefaultModification;
  import org.apache.directory.api.ldap.model.entry.Modification;
  import org.apache.directory.api.ldap.model.entry.ModificationOperation;
  import org.apache.directory.api.ldap.model.message.ModifyRequest;
  import org.apache.directory.api.util.Strings;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  
  /**
   * The action used to store the ModificationRequest operation type
   * <pre>
   * ModifyRequest ::= [APPLICATION 6] SEQUENCE {
   *     ...
   *     modification SEQUENCE OF SEQUENCE {
   *         operation  ENUMERATED {
   *             ...
   * </pre>
   * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
   */
  public class StoreOperationType extends GrammarAction<LdapMessageContainer<ModifyRequest>>
  {
      /** The logger */
      private static final Logger LOG = LoggerFactory.getLogger( StoreOperationType.class );
  
      /**
       * Instantiates a new action.
       */
      public StoreOperationType()
      {
          super( "Store Modify request operation type" );
      }
  
  
      /**
       * {@inheritDoc}
       */
      @Override
      public void action( LdapMessageContainer<ModifyRequest> container ) throws DecoderException
      {
          ModifyRequest modifyRequest = container.getMessage();
          TLV tlv = container.getCurrentTLV();
  
          // Decode the operation type
          int operation = 0;
  
          try
          {
              // Store the current operation.
              operation = IntegerDecoder.parse( tlv.getValue(), ModificationOperation.ADD_ATTRIBUTE.getValue(), 
                  ModificationOperation.INCREMENT_ATTRIBUTE.getValue() );
              Modification modification = new DefaultModification();
              modification.setOperation( operation );
              modifyRequest.addModification( modification );
              container.setCurrentModification( modification );
          }
          catch ( IntegerDecoderException ide )
          {
              String msg = I18n.err( I18n.ERR_05124_INVALID_OPERATION, Strings.dumpBytes( tlv.getValue().getData() ) );
              LOG.error( msg );
  
              // This will generate a PROTOCOL_ERROR
              throw new DecoderException( msg, ide );
          }
  
          if ( LOG.isDebugEnabled() )
          {
              switch ( operation )
              {
                 case LdapCodecConstants.OPERATION_ADD:
                     LOG.debug( I18n.msg( I18n.MSG_05133_MODIFY_OPERATION, "ADD" ) );
                     break;
 
                 case LdapCodecConstants.OPERATION_DELETE:
                     LOG.debug( I18n.msg( I18n.MSG_05133_MODIFY_OPERATION, "DELETE" ) );
                     break;
 
                 case LdapCodecConstants.OPERATION_REPLACE:
                     LOG.debug( I18n.msg( I18n.MSG_05133_MODIFY_OPERATION, "REPLACE" ) );
                     break;
 
                 default:
                     LOG.debug( I18n.msg( I18n.MSG_05133_MODIFY_OPERATION, "UNKNOWN" ) );
             }
         }
     }
 }